I am currently studying how to setup DNS servers and all aspects of the DNS system. I would also like to study the security aspect. I want to use current DNS server attack on my test servers. Is there one place that lists the current attacks that are used by hackers so I can learn how to prevent them?

General DNS Weaknesses

You can learn about DNSSEC as a countermeasure against some of the weaknesses in the protocol.

Here's a list of notes on DNS that point out several system-level weaknesses.

DNS is described in numerous RFCs. (That list is not up to date. You can find newer RFCs by looking at the references section in a recent DNS RFC.) Modern RFCs include a "Security Considerations" section that discusses security aspects related to the topic of the RFC.

Specific Vulnerabilities in DNS Implementations

Another broad category of vulnerabilities are bugs in specific implementations of DNS. There have been so many bugs in ISC Bind, for example, that this attack vector is much more likely to be successful than an attack at the system level (this depends on the target and the environment, though).

Complex Interactions

For example, if your network doesn't protect against rogue DHCP servers, it may be possible for an attacker to run a DHCP server that hands out a lease that points to a rogue DNS server. The DNS server then returns whatever addresses the attacker wants -- substituting his own address for paypal.com, or rerouting email, for example.

If you want to learn about attacks on the DNS system, make sure you first fully understand how DNS works (and DNSSEC, if you're interested in the security of that as well). Then I recommend you read up on DNS cache poisoning attacks, as there are multiple kinds and DNS is plagued most by those.

Of course, DNS server software suites have been plagued by all kinds of bugs, but those are implementation bugs and not protocol bugs.